Spring mounted adjustable boom construction
United States Patent 3395503
US Patent References:
Tree sprayer
- - 3011724

Mobile scaffolding
- - 3110359


Inventors:
Grenburg, Jesse J.
Barrett, William R.
Publication Date:
08/06/1968
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Primary Class:
52/114
Other Classes:
239/164, 239/166
International Classes:
A01M7/00
Foreign References:
AU154959B
CA525182A
FR767240A
FR1258384A